add tests to core

core/media/application/use-cases/SelectAvatarUseCase.test.ts

@@ -0,0 +1,126 @@
+import { describe, it, expect, vi, type Mock } from 'vitest';
+import type { Logger, UseCaseOutputPort } from '@core/shared/application';
+import { Result } from '@core/shared/application/Result';
+import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
+import {
+  SelectAvatarUseCase,
+  type SelectAvatarErrorCode,
+  type SelectAvatarInput,
+  type SelectAvatarResult,
+} from './SelectAvatarUseCase';
+import type { IAvatarGenerationRepository } from '../../domain/repositories/IAvatarGenerationRepository';
+import { AvatarGenerationRequest } from '../../domain/entities/AvatarGenerationRequest';
+
+interface TestOutputPort extends UseCaseOutputPort<SelectAvatarResult> {
+  present: Mock;
+  result?: SelectAvatarResult;
+}
+
+describe('SelectAvatarUseCase', () => {
+  let avatarRepo: { findById: Mock; save: Mock };
+  let logger: Logger;
+  let output: TestOutputPort;
+  let useCase: SelectAvatarUseCase;
+
+  beforeEach(() => {
+    avatarRepo = {
+      findById: vi.fn(),
+      save: vi.fn(),
+    };
+
+    logger = {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    } as unknown as Logger;
+
+    output = {
+      present: vi.fn((result: SelectAvatarResult) => {
+        output.result = result;
+      }),
+    } as unknown as TestOutputPort;
+
+    useCase = new SelectAvatarUseCase(
+      avatarRepo as unknown as IAvatarGenerationRepository,
+      output,
+      logger,
+    );
+  });
+
+  it('returns REQUEST_NOT_FOUND when request does not exist', async () => {
+    avatarRepo.findById.mockResolvedValue(null);
+
+    const input: SelectAvatarInput = { requestId: 'missing', selectedIndex: 0 };
+    const result = await useCase.execute(input);
+
+    expect(avatarRepo.findById).toHaveBeenCalledWith('missing');
+    expect(result).toBeInstanceOf(Result);
+    expect(result.isErr()).toBe(true);
+
+    const err = result.unwrapErr() as ApplicationErrorCode<SelectAvatarErrorCode, { message: string }>;
+    expect(err.code).toBe('REQUEST_NOT_FOUND');
+    expect(output.present).not.toHaveBeenCalled();
+  });
+
+  it('returns REQUEST_NOT_COMPLETED when request is not completed', async () => {
+    const request = AvatarGenerationRequest.create({
+      id: 'req-1',
+      userId: 'user-1',
+      facePhotoUrl: 'data:image/png;base64,abc',
+      suitColor: 'red' as unknown as Parameters<typeof AvatarGenerationRequest.create>[0]['suitColor'],
+    });
+
+    avatarRepo.findById.mockResolvedValue(request);
+
+    const input: SelectAvatarInput = { requestId: 'req-1', selectedIndex: 0 };
+    const result = await useCase.execute(input);
+
+    expect(result.isErr()).toBe(true);
+    const err = result.unwrapErr() as ApplicationErrorCode<SelectAvatarErrorCode, { message: string }>;
+    expect(err.code).toBe('REQUEST_NOT_COMPLETED');
+
+    expect(avatarRepo.save).not.toHaveBeenCalled();
+    expect(output.present).not.toHaveBeenCalled();
+  });
+
+  it('selects avatar and presents selected URL when request is completed', async () => {
+    const request = AvatarGenerationRequest.create({
+      id: 'req-1',
+      userId: 'user-1',
+      facePhotoUrl: 'data:image/png;base64,abc',
+      suitColor: 'red' as unknown as Parameters<typeof AvatarGenerationRequest.create>[0]['suitColor'],
+    });
+    request.completeWithAvatars(['https://example.com/a.png', 'https://example.com/b.png']);
+
+    avatarRepo.findById.mockResolvedValue(request);
+
+    const input: SelectAvatarInput = { requestId: 'req-1', selectedIndex: 1 };
+    const result = await useCase.execute(input);
+
+    expect(result.isOk()).toBe(true);
+    expect(request.selectedAvatarIndex).toBe(1);
+    expect(request.selectedAvatarUrl).toBe('https://example.com/b.png');
+
+    expect(avatarRepo.save).toHaveBeenCalledWith(request);
+    expect(output.present).toHaveBeenCalledWith({
+      requestId: 'req-1',
+      selectedAvatarUrl: 'https://example.com/b.png',
+    });
+  });
+
+  it('returns REPOSITORY_ERROR when repository throws', async () => {
+    avatarRepo.findById.mockRejectedValue(new Error('DB error'));
+
+    const input: SelectAvatarInput = { requestId: 'req-1', selectedIndex: 0 };
+    const result = await useCase.execute(input);
+
+    expect(result.isErr()).toBe(true);
+    const err = result.unwrapErr() as ApplicationErrorCode<SelectAvatarErrorCode, { message: string }>;
+    expect(err.code).toBe('REPOSITORY_ERROR');
+    expect(err.details?.message).toBe('DB error');
+
+    expect(output.present).not.toHaveBeenCalled();
+    expect((logger.error as unknown as Mock)).toHaveBeenCalled();
+  });
+});